Signal <VidRAMCSWR> is assigned but never used. This unconnected signal will be trimmed during the optimization process. Input <BACTr<3:2>> is never used. This port will be preserved and left unconnected if it belongs to a top-level block or it belongs to a sub-block and the hierarchy of this sub-block is preserved. Input <C20MEN> is never used. This port will be preserved and left unconnected if it belongs to a top-level block or it belongs to a sub-block and the hierarchy of this sub-block is preserved. Input <SW> is never used. This port will be preserved and left unconnected if it belongs to a top-level block or it belongs to a sub-block and the hierarchy of this sub-block is preserved. Input <nBG_IOB> is never used. This port will be preserved and left unconnected if it belongs to a top-level block or it belongs to a sub-block and the hierarchy of this sub-block is preserved. Signal <SndROMCS> is never used or assigned. This unconnected signal will be trimmed during the optimization process. FF/Latch <0> (without init value) has a constant value of 0 in block <0>. This FF/Latch will be trimmed during the optimization process. FF/Latch <STimer_1> (without init value) has a constant value of 0 in block <CNT>. This FF/Latch will be trimmed during the optimization process.